This book is a prequel to Willard Manor. In Willard manor, Shelley and Tony buy an old dilapidated house with an intriguing history and turn it into a home for them and their future children. Shelley's dad is Mark Fortier and Leaving Mark is his story. Mark goes from childhood innocence to a catastrophe, a situation which leaves him struggling not only with who he is, but how best to move forward in life without his father. Along the way, he discovers the meaning and purpose of his own life as well as what it takes to be a man.